Rapid thermal treatment of interlayer-free Ethyl silicate (cas 11099-06-2) 40 derived membranes for desalination
-
Add time:07/20/2019 Source:sciencedirect.com
This work demonstrates for the first time the preparation of interlayer-free silica membranes by the Rapid Thermal Processing (RTP) method at 630 °C using Ethyl silicate (cas 11099-06-2) (ES40) as a silica precursor. RTP resulted in water being retained inside the xerogel pores at higher temperatures, thus favouring condensation reactions and the formation of siloxane bridges. As a result, RTP ES40 xerogels were stronger than their conventional thermal processing (CTP) counterparts and also had higher pore volumes and surface areas. Nevertheless, RTP ES40 xerogels were characterised by a tri-modal pore size distribution. The majority of pores were in the microporous domain with a minor fraction of mesopores. Successful preparation of membranes without a conventional interlayer was dependent on the pH of the sol-gel, as sols with a pH 4 or 6 were able to penetrate into the α-alumina substrate allowing strong adhesion to the support and formed a defect free top layer. The best interlayer-free RTP silica membrane was prepared with a pH 4 sol reaching high water fluxes of 17.8 kg m−2 h−1 at 60 °C and high salt rejection (>99%) for desalination of 3.5 wt% NaCl synthetic seawater. The dilution of the sol with ethanol also played an important role in the membrane stability. Membranes prepared from a sol of pH 4 with EtOH:Si ratio 255:4 were stable for 120 h, but a reduction in this ratio to 200:4 increased the stability to 300 h. This improvement was attributed to thicker films derived from more viscous sols.
We also recommend Trading Suppliers and Manufacturers of Ethyl silicate (cas 11099-06-2). Pls Click Website Link as below: cas 11099-06-2 suppliers
Prev:Ethyl silicate (cas 11099-06-2) for surface treatment of concrete – Part II: Characteristics and performance
Next:Consolidation of a Tunisian bioclastic calcarenite: From conventional Ethyl silicate (cas 11099-06-2) products to nanostructured and nanoparticle based consolidants) - 【Back】【Close 】【Print】【Add to favorite 】
- Related Information
- Consolidation of a Tunisian bioclastic calcarenite: From conventional Ethyl silicate (cas 11099-06-2) products to nanostructured and nanoparticle based consolidants07/22/2019
- Ethyl silicate (cas 11099-06-2) for surface treatment of concrete – Part II: Characteristics and performance07/21/2019
- Thermal behavior of Carrara marble after consolidation by ammonium phosphate, ammonium oxalate and Ethyl silicate (cas 11099-06-2)07/19/2019
- Pre-hydrolysed Ethyl silicate (cas 11099-06-2) as an alternative precursor for SiO2-coated carbon nanofibers07/18/2019
- Ethyl silicate (cas 11099-06-2) for surface treatment of concrete – Part I: Pozzolanic effect of Ethyl silicate (cas 11099-06-2)07/17/2019
- Consolidation of lime mortars with Ethyl silicate (cas 11099-06-2), nanolime and barium hydroxide. Effectiveness assessment with microdrilling data07/16/2019
-
Health and Chemical more >
-
Related Products
- Ethyl (13-cis)-9-(4-methoxy-2,3,6-trimethylphenyl)-3,7-dimethyl-2,4,6,8-nonatetraenoate
- ethyl (1R,2R)-1-phenyl-2-(trideuteriomethylamino)cyclohex-3-ene-1-carboxylate,hydrochloride
- Ethyl (1S,2R)-2-(dimethylamino)-1-phenylcyclohex-3-ene-1-carboxylate hydrochloride
- Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate
- Ethyl (2-amino-4-hydroxy-6-methyl-5-pyrimidinyl)acetate
- Ethyl (2-bromopropionamido)acetate
- Ethyl (2-cyanoimino-5,6-dichloro-1,2,3,4-tetrahydroquinazolin-3-yl)acetate
- ETHYL (2E,4Z)-DECADIENOATE
- Ethyl (2-hydroxyethyl)dimethyl-ammonium benzilate chloride
- Ethyl (2-mercaptoethyl) carbamate S-ester with O,O-dimethyl phosphorodithioate